参数资料
型号: R5F212DCSNFP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 20 MHz, RISC MICROCONTROLLER, PQFP80
封装: 12 X 12 MM, 0.50 MM PITCH, PLASTIC, LQFP-80
文件页数: 11/62页
文件大小: 508K
代理商: R5F212DCSNFP
R8C/2C Group, R8C/2D Group
2. Central Processing Unit (CPU)
Rev.2.10
Dec 05, 2007
Page 17 of 57
REJ03B0183-0210
2.8.7
Interrupt Enable Flag (I)
The I flag enables maskable interrupts.
Interrupt are disabled when the I flag is set to 0, and are enabled when the I flag is set to 1. The I flag is set to 0
when an interrupt request is acknowledged.
2.8.8
Stack Pointer Select Flag (U)
ISP is selected when the U flag is set to 0; USP is selected when the U flag is set to 1.
The U flag is set to 0 when a hardware interrupt request is acknowledged or the INT instruction of software
interrupt numbers 0 to 31 is executed.
2.8.9
Processor Interrupt Priority Level (IPL)
IPL is 3 bits wide and assigns processor interrupt priority levels from level 0 to level 7.
If a requested interrupt has higher priority than IPL, the interrupt is enabled.
2.8.10
Reserved Bit
If necessary, set to 0. When read, the content is undefined.
相关PDF资料
PDF描述
R5F212D7SDXXXFP 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP80
R5F212DASNXXXFP 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP80
R5F212F2DFP 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP32
R5F212F2NXXXFP 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP32
R5F212F2NFP 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP32
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参数描述
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